By studying the system of SEEIA of the railway construction project exhaustively, the writer pointed out the range, factors and the content of SEEIA and put forward steps of it finally.

• 详尽地研究了铁路建设项目社会经济环境影响评价体系，指出了社会经济环境影响评价的范围，评价因子和评价的内容，最后提出了铁路建设项目社会经济环境影响评价的步骤。